Equipment Lease vs Buy Calculator

How This Equipment Lease vs Buy Calculator Helps

Large equipment purchases can make or break a growing company. Forklifts, CNC machines, medical devices, trucks, and other specialized assets often cost tens or hundreds of thousands of dollars. When you need this kind of equipment, you typically face a core question: should the business lease it or buy it (usually with a loan)?

The decision affects cash flow, taxes, and long-term total cost of ownership. Leasing may free up cash and offer flexibility, while buying can build equity and reduce costs over a long useful life. This calculator helps you compare the total cost of a straightforward lease versus a straightforward loan so you can see which path is likely to be more economical based on your assumptions.

Use it as a planning tool before you talk to a lender, lessor, or advisor. You can quickly plug in different prices, interest rates, lease terms, and tax rates to see how the numbers shift.

Inputs You Can Adjust

The calculator relies on a few key pieces of information. Each field corresponds to a part of the lease or buy scenario:

• Equipment Purchase Price ($) – The total amount you would pay to buy the equipment. This is usually the invoice price before tax.
• Loan Interest Rate (%) – The annual percentage rate (APR) on the loan you would use to finance the purchase.
• Loan Term (years) – How long you will take to repay the loan, in years.
• Resale Value After Loan ($) – The expected amount you can sell the equipment for at the end of the loan term, or the estimated trade-in value.
• Monthly Lease Payment ($) – The payment quoted by the leasing company for a simple lease with fixed monthly payments.
• Lease Term (months) – The length of the lease, in months, for which those fixed payments apply.
• Tax Rate on Payments (%) – The effective tax rate that applies to your deductible payments (for example, your corporate tax rate). This lets the calculator approximate the after-tax cost of lease and loan payments.

These inputs keep the comparison simple. You can refine them as you gather more precise quotes or learn more about expected resale values.

Core Formulas and How the Calculator Works

To compare leasing and buying, the calculator converts both options into total cost figures over the relevant term. At a high level, it looks at:

• Total cost of buying with a loan, net of the resale value and estimated tax benefit on deductible interest payments.
• Total cost of leasing, net of the estimated tax benefit on deductible lease payments.

Loan Payment Formula

If you buy the equipment and finance it with a standard amortizing loan, your monthly payment is based on the well-known loan payment formula. Let:

• P = loan principal (the amount you borrow, usually equal to the purchase price)
• r = monthly interest rate (annual rate divided by 12)
• n = total number of monthly payments (years × 12)

The monthly loan payment M is:

Once the monthly payment is known, the calculator estimates total loan payments over the term. In a simplified comparison, the total pre-tax cash outflow from the loan is:

Total Loan Payments = M × n

It then subtracts the expected resale value at the end of the term, because selling or trading in the asset recovers some of your outlay:

Net Loan Cost (pre-tax) ≈ (M × n) − Resale Value

Lease Cost Formula

For leasing, the core calculation is simpler. If your fixed monthly lease payment is L and the lease runs for t months, then:

Total Lease Cost (pre-tax) = L × t

Because you typically return the equipment at the end of the lease without resale proceeds, there is no residual value offset in this simplified comparison.

Tax Effect on Payments

Both loan and lease structures can create tax deductions. The details depend heavily on local rules, but a common pattern is:

• Lease payments are often fully deductible as an operating expense.
• For loans, the interest portion of the payment and depreciation may be deductible.

To keep the tool practical, it uses a straightforward approximation:

• Applies your input Tax Rate on Payments to the stream of payments to estimate the tax benefit.
• Subtracts that estimated benefit from the pre-tax cost to give an approximate after-tax cost.

This does not replace detailed tax planning. It simply lets you quickly see how a higher or lower tax rate might change your effective cost under each option.

Interpreting Your Results

After you enter your numbers and run the calculation, the tool reports the estimated total cost for each scenario, usually something like:

• Total Cost of Buying – The net cost of purchasing and financing the equipment, minus the resale value and including the tax effect you specified.
• Total Cost of Leasing – The sum of lease payments over the lease term, adjusted for the tax rate you entered.

The lower figure (lease vs buy) highlights the more cost-effective option under the assumptions you provided. This is not a universal answer. Changing the interest rate, useful life, or residual value can easily flip which option is cheaper.

Use the outputs in three main ways:

1. Check sensitivity. Adjust one input at a time (like interest rate or resale value) to see which factors matter most.
2. Compare offers. If you have quotes from multiple lenders or lessors, plug each scenario into the calculator and compare the totals.
3. Align with strategy. If leasing is slightly more expensive in dollars but gives you valuable flexibility or conserves cash, you might still choose to lease.

Worked Example

To make the math concrete, consider a mid-sized manufacturing business deciding whether to buy or lease a new piece of equipment.

Assume:

• Equipment Purchase Price: $100,000
• Loan Interest Rate: 6% annually
• Loan Term: 5 years (60 months)
• Resale Value After Loan: $30,000
• Monthly Lease Payment: $1,900
• Lease Term: 60 months
• Tax Rate on Payments: 25%

Step 1: Estimate Loan Payment

First convert the annual interest rate to a monthly rate:

r = 6% ÷ 12 = 0.5% per month = 0.005 in decimal form

Number of payments n = 5 × 12 = 60

Plugging these into the loan payment formula yields a monthly payment (rounded) of about:

M ≈ $1,933

Step 2: Total Loan Cost (Pre-Tax and After-Tax)

Total loan payments over 60 months:

M × n ≈ $1,933 × 60 ≈ $115,980

Subtract the expected resale value at the end of the term:

Net Loan Cost (pre-tax) ≈ $115,980 − $30,000 = $85,980

If we approximate that the full payment stream is deductible at a 25% rate, a rough tax benefit is:

Estimated tax benefit ≈ 25% × $115,980 ≈ $28,995

Approximate after-tax cost of buying:

$85,980 − $28,995 ≈ $56,985

Step 3: Total Lease Cost (Pre-Tax and After-Tax)

Total lease payments over 60 months:

L × t = $1,900 × 60 = $114,000

Estimated tax benefit at a 25% rate:

25% × $114,000 = $28,500

Approximate after-tax cost of leasing:

$114,000 − $28,500 = $85,500

Step 4: Compare the Two Paths

Under these assumptions:

• Approximate after-tax cost of buying: $56,985
• Approximate after-tax cost of leasing: $85,500

Buying appears to be more cost-effective over the five-year period, primarily because of the significant resale value at the end of the loan term. However, leasing might still appeal if preserving cash or avoiding ownership risks is more important for the business.

When Leasing vs Buying Tends to Win

The best choice depends on your industry, cash position, risk tolerance, and how quickly technology changes. The following table summarizes typical patterns that many businesses observe when comparing leasing and buying:

Use the calculator to layer quantitative insights onto these qualitative trade-offs. For example, if your industry has rapid innovation cycles, the slightly higher cost of leasing could be justified by the ability to upgrade frequently.

Limitations and Assumptions

This tool is designed to be straightforward and fast, which means it relies on simplifying assumptions. Understanding these limitations will help you interpret the outputs correctly:

• No detailed depreciation schedules. The calculator does not model tax depreciation (such as accelerated schedules or bonus depreciation). Instead, it applies a single effective tax rate to total payments as an approximation.
• Simplified tax treatment. Actual tax rules vary by country and may treat interest, principal, depreciation, and lease payments differently. The tax rate input is a high-level estimate, not a precise reflection of your jurisdiction’s rules.
• Ignores maintenance, insurance, and operating costs. Both leasing and buying involve additional costs (maintenance contracts, repairs, insurance, downtime). These are not included in the calculation and can change the true total cost of ownership.
• Fixed interest and lease rates. The model assumes a fixed interest rate for the entire loan term and a fixed lease payment for the entire lease term. Variable-rate loans or leases with step-up payments are not directly modeled.
• No discounting of future cash flows. The comparison uses nominal totals over the loan or lease term and does not discount future payments to present value. For larger projects or longer terms, a full net present value (NPV) analysis may be more appropriate.
• Single resale value estimate. The resale value input is a single point estimate at the end of the loan term. Actual market values can be higher or lower depending on condition, market demand, and economic conditions.
• Not personalized financial advice. Results are general estimates to support planning. They do not account for your complete financial picture, risk profile, or legal/tax obligations.

Because of these limitations, it is wise to treat the output as a starting point for discussion with your accountant, finance team, or advisor. They can help you refine assumptions, incorporate tax rules specific to your situation, and weigh non-financial considerations.

Using the Calculator in Your Decision Process

For many equipment-heavy businesses—such as construction firms, logistics companies, medical practices, and manufacturers—the lease vs buy decision repeats over time as assets age and capacity needs change. Incorporate this calculator into a consistent process:

1. Define your goal. Are you optimizing for lowest total cost, preserving cash, maximizing flexibility, or improving reported metrics?
2. Collect realistic inputs. Get loan and lease quotes, estimate a reasonable resale value based on similar used equipment, and confirm your effective tax rate with your advisor.
3. Run multiple scenarios. Try best-case, base-case, and worst-case assumptions for resale value, interest rates, and tax treatment.
4. Document your rationale. Record which option you choose and why (cost, flexibility, risk), so you can review and improve your approach over time.

By combining this numerical comparison with your operational knowledge and professional advice, you can make more confident, repeatable decisions about whether to lease or buy the equipment your business needs.